JP2000200591A - Battery holder with temperature sensor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve the measurement of a temperature of a coin battery during charging or discharging. SOLUTION: Two electrodes holding a battery consists of a rod-like electrode 5 and a plate-like electrode 6 fixed to a printed circuit board 3. The plate-like electrode is formed into an elongated shape, and is fixed at the root thereof to the printed circuit board 3, is swollen and rises at the center from the printed circuit board 3. The plate-like electrodes are used in group of two, astride which a coin battery 30 is placed. A thermister 25 is mounted on the printed circuit board 3 between the plate-like electrodes. A guide frame 27 for positioning the coin battery is disposed around the plate-like electrodes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery holder with a temperature sensor, which is suitable for testing.

[0002]

2. Description of the Related Art Conventionally, in order to measure the temperature of a battery during charging and discharging, in the case of a cylindrical battery, a temperature sensor has been pressed against the side of the battery. However, in the case of coin or button type batteries, the temperature sensor has to be pressed against the end, that is, the electrode, so that the measurement is performed by incorporating the temperature sensor in the electrode.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to measure the temperature of a coin battery without using an expensive electrode with a built-in temperature sensor.

[0004]

SUMMARY OF THE INVENTION Among the two opposing electrodes for sandwiching a battery, one electrode is constituted by a rod-shaped electrode and the other is constituted by a plate-shaped electrode. The rod-shaped electrode is supported by the support so as to be movable in the axial direction, and is urged by a spring toward the partner electrode. One end of the plate-shaped electrode is fixed to the support, and a contact portion with the battery floats from the support. A temperature sensor such as a thermistor is fixed to a support plate supporting the plate-like electrode while being retracted from the plate-like electrode. When the battery is sandwiched between the two electrodes, the battery is pushed by the force of the rod-shaped electrode spring, the plate-shaped electrode retreats, and the battery comes into contact with the temperature sensor.

As described above, the holder of the present invention merely measures the temperature of the battery during charging / discharging since the plate-like electrode is bent and one end of the battery comes into contact with the temperature sensor just by sandwiching the battery between the two electrodes. can do. Moreover, since the structure is simple,
It can be provided at low cost. This holder can be applied to a cylindrical battery as well as a coin battery.

The plate-like electrode may be separated into an electrode for extracting a current and an electrode for measuring a battery voltage, and a temperature sensor may be disposed between the two electrodes. By doing so, the battery can sit well across the two plate-like electrodes and can be measured in a stable state, and the battery voltage can be accurately measured without a voltage drop due to charge / discharge current.

The rod-shaped electrode also incorporates a voltage measuring probe in an electrically insulated state in the main body cylinder in order to reduce a voltage measurement error, and the probe of the probe is inserted from the tip of the main body head. It is preferable to urge the tip with a spring so as to project slightly.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, two support plates 1 and 2 are joined with a space therebetween, and a printed circuit board 3 is mounted on a lower support plate 1 in an overlapping manner. Substrate 3
And a plurality of sets (five sets in the figure) of electrodes are attached to the upper support plate 2. Each set of electrodes includes a rod-shaped electrode 5 attached to the upper support plate 2 and a plate-shaped electrode 6 attached to the printed board 3.

The rod electrode 5 is fixed through a hole formed in the upper support plate 2. As shown in FIG. 3, the rod-shaped electrode is fixed by screwing the contact 11 at the tip of the outer cylinder 7 with the collar 9 and the sleeve 10 interposed therebetween. A coil spring 12 is contracted between the collar 9 and the support plate 2, and the rod electrode 5 is urged downward by the spring. Reference numeral 13 denotes a stopper for preventing the rod-shaped electrode from falling down.

The contact 11 is, as shown in FIG.
An insulating sleeve 16 is placed in the sleeve 5 and a voltage measuring probe 17 is supported in these sleeves so as to be able to slide back and forth. Further, a spring 19 is housed inside the cylindrical body 15 while being electrically insulated from the cylindrical body, and the spring 17 urges the probe 17 forward. The spring 19
Is weaker than the spring 12. The tip of the voltage measurement probe 17 is sharply pointed, slightly protrudes from the tip of the cylindrical body 15, and comes into contact with the battery. The lead wire 20 connected to the probe 17 is drawn out through the inside of the cylinder. A plurality of sharp projections 19 are formed at the tip of the cylindrical body 15 so as to surround the probe 19, and the projections come into contact with the battery. The cylindrical body 15 is provided via the outer cylinder 7,
It is connected to the electric wire 21 connected to the upper part of the outer cylinder.

There are two plate-like electrodes 6 in each group, and a total of 10
Books are arranged in a comb on the printed circuit board 3. As shown in FIG. 4 and FIG. 5, each plate-like electrode is formed to be elongated, the base is fixed to the printed board, and the center is raised and floated from the printed board. The plate-shaped electrode has elasticity, and when the battery is pressed down from above, the plate-like electrode flexes flat and returns to the original shape when the battery is removed. Furthermore, the tip of the electrode is bent and goes under the printed circuit board. Each plate electrode 6 is connected to the connector 22 by a printed wiring.

A thermistor 25 is mounted on the printed circuit board 3 at the center of the two plate electrodes 6 and directly below the bar electrodes 5. The terminals of the thermistor are led to the connector 26 by printed wiring. Reference numeral 27 denotes a guide frame for positioning the coin battery.

The rod-shaped electrode 5 is normally fully lowered by the force of the spring 12. When sandwiching the battery between the electrodes,
The rod-shaped electrode 5 is pulled up by putting a finger on the lower surface of the collar 9 so as to compress and compress the spring 12, and as shown by solid lines in FIGS. 5 and 6, the coin battery 30 is straddled over the two plate-shaped electrodes. Put on. When the finger is released from the collar in this way, the rod-shaped electrode 5 is lowered by the force of the spring 12. Then, first, the tip of the voltage probe 17 comes into contact with the battery, but the spring 19 contracts immediately, and the probe remains in contact with the battery.
The tip of the cylinder 15 also contacts the battery, and in that state, the battery is further pushed down. Thus, as shown by the chain line in FIGS. 5 and 6, the battery 30 elastically deforms the plate electrode 6, and the bottom surface contacts the thermistor 25.

In this state, charging and discharging are performed. As the electrode for extracting the charge / discharge current, one of the cylindrical side 15 of the rod-shaped electrode 5 and one of the two plate-shaped electrodes 6 is used. The other plate-like electrode and the probe 17 are connected to a voltmeter to measure the battery voltage.
In this case, the voltage can be accurately measured without the influence of the voltage drop.

When the battery temperature rises due to charging and discharging, the temperature of the thermistor 25 in contact with the battery 30 also rises, and its electric resistance changes. By measuring this, the temperature of the battery is measured.

[Brief description of the drawings]

FIG. 1 is a front view of a battery holder, in which two left rod electrodes are omitted.

FIG. 2 is a plan view of the battery holder, with a left side of a support plate cut away.

FIG. 3 is a sectional view of a main part of a rod-shaped electrode.

FIG. 4 is a perspective view of a main part of a battery holder.

FIG. 5 is a sectional view taken along line AA of FIG. 1;

FIG. 6 is a sectional view taken along line BB of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support plate 2 Support plate 5 Rod electrode 6 Plate electrode 12 Spring 25 Temperature sensor (thermistor) 30 Battery

Claims (3)

[Claims] 1. One of two opposed electrodes sandwiching a battery is supported by a support so as to be movable in an axial direction, and is a rod-shaped electrode which is biased toward a partner electrode by a spring. The other is a plate-like electrode, one end of which is fixed to a support, and a contact portion with the battery is floating from the support, and a support plate supporting this plate-like electrode has a plate-like shape. The temperature sensor is fixed in the state of being retracted from the electrode, and when the battery is sandwiched between both electrodes, the battery is pushed by the force of the spring of the rod-shaped electrode, the plate-shaped electrode retreats, and the battery is retracted. A battery holder with a temperature sensor configured to contact the temperature sensor. 2. The battery according to claim 1, wherein said plate-like electrode is separated into an electrode for extracting current from the battery and an electrode for measuring battery voltage, and these two electrodes are arranged on both sides of said temperature sensor. Item 2. A battery holder with a temperature sensor according to item 1. 3. A probe for voltage measurement is incorporated in a state in which the rod-shaped electrode is electrically insulated in the main body cylindrical portion, and a spring is used so that the front end of the probe projects from the front end of the main body head. The battery holder with a temperature sensor according to claim 1, which is energized.